DR. RYAN ANTHONY FREDERIKSEN MD
NPI 1922260033
Radiology - Diagnostic Radiology in San Diego, CA
About Dr. Ryan Anthony Frederiksen Md NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
DR. RYAN ANTHONY FREDERIKSEN MD (NPI 1922260033) is an individual diagnostic radiology provider in San Diego, California, licensed in California (A108502) and active in the NPI registry since June 2008. He is enrolled in Medicare PECOS, is affiliated with Asante Rogue Regional Medical Center, and maintains 4 additional practice locations.
NPPES Registry Identity
Specialties & Licenses 2
Secondary Practice Locations 4
Accepted Insurance
Medicare Participation & PECOS CMS
Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.
Medicare Enrollment Status
Enrolled in Medicare and accepts Medicare assignment
Dr. Ryan Anthony Frederiksen Md is registered in PECOS and agrees to accept the Medicare-approved amount as full payment. Medicare patients are not billed beyond the standard deductible and coinsurance.
Medicare Billing Reassignments
35Medicare enrollment records show Ryan Frederiksen reassigns Medicare billing to 35 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
San Diego, CA 92115
- Reassigned Medicare billing, California and Hawaii enrollments
- Also billed through NPI 1992747547 (Hawaii)
- 102 clinicians in this Medicare group
La Mesa, CA 91941
- Reassigned Medicare billing, California and Hawaii enrollments
- 78 clinicians in this Medicare group
Anaheim, CA 92807
- Reassigned Medicare billing, California enrollment
- 95 clinicians in this Medicare group
Pomona, CA 91766
- Reassigned Medicare billing, California enrollment
- 1,939 clinicians in this Medicare group
Upland, CA 91786
- Reassigned Medicare billing, Hawaii enrollment
- 4 clinicians in this Medicare group
Tehachapi, CA 93561
- Reassigned Medicare billing, California enrollment
- 252 clinicians in this Medicare group
Nogales, AZ 85621
- Reassigned Medicare billing, Hawaii enrollment
- 3 clinicians in this Medicare group
Gilroy, CA 95020
- Reassigned Medicare billing, California enrollment
- 2,460 clinicians in this Medicare group
Manteca, CA 95336
- Reassigned Medicare billing, California enrollment
- 534 clinicians in this Medicare group
Mountain View, CA 94040
- Reassigned Medicare billing, Hawaii enrollment
- 6 clinicians in this Medicare group
Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.
Areas of Expertise CMS Part B claims 62
Services this provider delivered to Medicare fee-for-service patients, from the CMS Medicare utilization data. Higher counts generally reflect more experience with a service; care delivered outside Medicare is not included.
Hospital Affiliations CMS Care Compare 4
Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.
Asante Rogue Regional Medical Center
Acute Care Hospitals · Medford, ORProvidence Medford Medical Center
Acute Care Hospitals · Medford, ORProvidence St Peter Hospital
Acute Care Hospitals · Olympia, WAPeacehealth Southwest Medical Center
Acute Care Hospitals · Vancouver, WAPhysician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 92128 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.
Other Providers at the Same Location NPPES 7
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
SAN DIEGO, CA 92128
SAN DIEGO, CA 92128
SAN DIEGO, CA 92128
SAN DIEGO, CA 92128
SAN DIEGO, CA 92128
SAN DIEGO, CA 92128
SAN DIEGO, CA 92128
Frequently Asked Questions NPPES & CMS
Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.
What is Ryan Frederiksen's NPI number?
The NPI number for Ryan Frederiksen is 1922260033. It was assigned to this individual provider in the NPPES registry on June 30, 2008.
Where is Ryan Frederiksen located?
Ryan Frederiksen practices at 13280 Evening Creek Dr S, San Diego, CA 92128. The listed phone number is (805) 403-9924.
What is Ryan Frederiksen's specialty?
The primary specialty registered for this NPI is Radiology, specializing in Diagnostic Radiology, with taxonomy code 2085R0202X.
Is Ryan Frederiksen enrolled in Medicare?
Yes. Ryan Frederiksen is registered in the Medicare PECOS system and accepts Medicare assignment, which means accepting the Medicare-approved amount as payment in full for covered services.
Which organizations bill Medicare for Ryan Frederiksen's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Ryan Frederiksen reassigns Medicare benefits to 35 organizations: Modesto Radiological Medical Group, Inc (San Diego, CA), X-Ray Medical Group Inc (La Mesa, CA), Fullerton Radiology Medical Group, Inc (Anaheim, CA), County Of Los Angeles (Pomona, CA), San Antonio Radiological Medical (Upland, CA) and 30 more organizations, listed in the Medicare section above. Each reassignment is filed with Medicare on form CMS-855R, signed by both the clinician and the organization, and lets the organization bill Medicare and receive payment for Ryan Frederiksen's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does Ryan Frederiksen accept?
Health plans from Arkansas Blue Cross and Blue Shield, Blue Cross Blue Shield of Arizona, Blue Cross and Blue Shield of Texas, CareSource and Health Advantage and 4 other insurers list Ryan Frederiksen as in-network in at least one marketplace plan. Coverage varies by plan and year; verify with the insurer or the provider before a visit.
Is Ryan Frederiksen affiliated with any hospitals?
According to CMS data, Ryan Frederiksen is affiliated with Asante Rogue Regional Medical Center, Providence Medford Medical Center, Providence St Peter Hospital and Peacehealth Southwest Medical Center.
When was this NPI record last updated?
The NPPES record for Ryan Frederiksen was last updated on February 13, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 20 months ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.
# Dr. Ryan Anthony Frederiksen, MD · NPI 1922260033
Diagnostic Radiology physician in San Diego, California. Individual provider, active in the CMS NPPES registry since June 30, 2008.
## Identity
- **NPI:** 1922260033 (Entity type: Individual)
- **Enumerated:** June 30, 2008
- **Primary specialty:** Radiology - Diagnostic Radiology · taxonomy 2085R0202X
- **State license:** A108502 (California)
- **Sole proprietor:** No
## Practice location
- **Address:** 13280 EVENING CREEK DR S, San Diego, CA 92128-4101
- **Phone:** (805) 403-9924
## Medicare
- **Medicare:** Enrolled (PECOS); accepts Medicare assignment
- **Ordering & referring:** eligible for Part B labs & imaging, durable medical equipment, home health, power mobility devices
- **Bills Medicare through:** 35 organizations under Medicare reassignment (form CMS-855R): Modesto Radiological Medical Group, Inc (NPI 1629424486, San Diego, CA); X-Ray Medical Group Inc (NPI 1740232776, La Mesa, CA); Fullerton Radiology Medical Group, Inc (NPI 1861451858, Anaheim, CA); County Of Los Angeles (NPI 1649464496, Pomona, CA); San Antonio Radiological Medical (NPI 1457396947, Upland, CA); and 30 more · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Northeastern Ohio University College Of Medicine, class of 2007
## Record status
- **NPPES last updated:** February 13, 2025
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Source: [NPI Profile](https://npiprofile.com/npi/1922260033) · Data from the CMS NPPES public registry.